HSK 7-9
固化
gùhuà动
to solidify; to harden; (fig.) to make permanent; to become fixed
这些偏见不能继续固化下去。
Zhè xiē piān jiàn bù néng jì xù gù huà xià qù.
These prejudices must not be allowed to become further entrenched.
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Appears across levels (7-9) in the HSK 3.0 word list.